@book{33019,
	author = {Brenner, Susanne C. and Scott, L. Ridgway and Scott, L. Ridgway ; jt. auth.},
	title = {The mathematical theory of finite element methods},
	publisher = {Springer},
	year = {2012},
	series = {Text in applied mathematics },
	address = {New York},
	edition = {3rd}
}